Ford 4 cam or the HEMI are more legendary
The average citizen didn't have access to anything like a Marmon Wasp. The Flatty was for the cheap and everywhere. And it came before the Hudson.
Neither the Marmon or Hudson engines made much of an impact beyond the history they contributed to, as significant as it is.
The Flathead spawned an aftermarket industry. The Chevy took the aftermarket from small business to multi-million dollar corporations.
Again - the thread is about racing engines, not production engines.
LSX. end of post